# SpamRATS DYNA DNSBL Lookup

> SpamRATS DYNA DNSBL Lookup is a paid API for AI agents from ip.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-13).

Checks whether a given IPv4 address is listed on the SpamRATS DYNA blacklist (dyna.spamrats.com) via DNS-based blackhole list query

## Facts

- Endpoint: GET https://ip.intel.rallylive.ca/ip/blacklist/spamrats-dyna?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/spamrats-dyna-dnsbl-lookup-516c6555
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_X9jEPISyOJcyPEnqMwjyC

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability spamrats-dyna-dnsbl-lookup-516c6555
```

Example prompt: Can you check if the IP address 203.0.113.45 is listed on the SpamRATS DYNA blacklist and tell me whether it's flagged and why?

## When to prefer this

Choose this endpoint when you need a fast, single-list authoritative check specifically against SpamRATS DYNA — which focuses on dynamically assigned IP ranges commonly associated with residential or ISP-assigned addresses used for spam. Prefer this over generic multi-list blacklist checkers when you want precise, isolated SpamRATS DYNA results with return codes and reason text rather than an aggregate score.

## Known failure modes

- Invalid or non-public IPv4 address returns an error or unlisted result
- DNS resolution failure via Cloudflare DoH returns an error
- IPv6 addresses are not supported
- Rate limiting or payment failure returns a 402 or error response

## How this service works

Is this IPv4 address listed on spamrats dyna (dyna.spamrats.com)? Performs the DNSBL query (reversed octets under dyna.spamrats.com, via Cloudflare DoH) and returns listed yes/no with the return codes and, where the list publishes one, the reason text. One list, one precise answer. $0.01 per lookup.

## Output

Returns whether the queried IPv4 address is listed on the SpamRATS DYNA blacklist, including the DNSBL return codes and, when available, the human-readable reason text explaining why the IP was listed.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/spamrats-dyna-dnsbl-lookup-516c6555/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from ip.intel.rallylive.ca](https://www.zero.xyz/host/ip.intel.rallylive.ca/llms.txt)